Petra Kvitova boosted her status as a leading favourite for a third Wimbledon title by sweeping past Donna Vekic in the final of the Berlin WTA grass-court tournament on Sunday. The Czech seventh seed won 6-2, 7-6 (8/6) to clinch her second title of the year and 31st of her career. Sunday's victory gave her a sixth grass-court trophy for a 31st title, giving her more than any other active player besides Venus Williams' 49. Kvitova, 33, who was Wimbledon champion in 2011 and 2014, burst out of the blocks, breaking her opponent twice in the first set.